Light Field Camera Allows Focus Shift, Post-Shot
Lytro light field camera allows photographers to manipulate focus after the picture is taken. Photo courtesy of Lytro.
In the field of photography, post-processing can yield significant benefits, such as the ability to correct for color, exposure, and geometry. However, some image properties—such as focus—may not be significantly modified post-capture.
A new camera technology will bring unprecedented flexibility to the post-processing stage. When it is made commercially available later this year, the Lytro light field camera will allow photographers to do the unthinkable—adjust image focus after a shot has been taken.
Based on a Stanford dissertation by Dr. Ren Ng, the new photographic technology records separate light rays and their individual characteristics, rather than combining them as typical digital cameras do. In-camera software integrates the various colors and intensities of these rays to create what we perceive as a single image, and the recorded light field data may be manipulated later to obtain the optimal focus point.
Demonstrations of the technology may be found on the Lytro blog page.